Source Interference

6th-level abjuration

Casting Time:1 action
Range:Self
Components:V, S, F
Duration:Concentration, up to 1 minute

By manipulating connections to the Pool of Magic in an area, this spell slows down the ability of all nearby spellcasters to cast spells and access the Source. This spell allows you to create an aura of magical interference which causes an increase in the casting time of spells.

The aura is an invisible 60-foot sphere centered on you. The aura moves with you, though it does not affect you. While in the affected area, spells with a casting time of a bonus action take 1 action to cast. All spells with a casting time of 1 action or longer take twice as long to cast. Reaction spells cast while in the affected area are cast normally.

A creature using Metamagic effects to impact the casting time of their spells while within the area of effect treats the spell’s longer casting time as the casting time being modified by their Metamagic.